To compare the independent influence of mechanical and non-mechanical factors on bone features, multiple regression analyses were performed between pQCT indicators of radius and tibia bone mass, mineralization, design and strength as determined variables, and age or time since menopause (TMP), body mass, bone length and regional muscles' areas as selected determinant factors, in Caucasian, phys...

introduction: the objective of this study was to evaluated effect of retinoic acid (ra) on the tibia osteogenesis in the chick embryos. materials and methods: for this purpose 0.75mg ra dissolved in 2ml dimthylsulfoxide (dmso) was droped on the limb bud of chick embryos at sixth day of incubation. the osteogenesis of tibia in ra-treated embryos were compared with normal control and dmso-treated...

BACKGROUND Tibia shaft fractures are among the most common fractures. However, the incidence of tibia fractures does not increase in the elderly. Osteoporotic bone resorption is possibly compensated for by periosteal apposition, which improves the mechanical properties of the bone. The purpose of this study was to identify a correlation between geometric indices of transverse bone scans and rad...

IGF-I stimulates osteoblast proliferation, bone formation, and increases bone volume in normal weight-bearing animals. During skeletal unloading or loss of weight bearing, bone becomes unresponsive to the anabolic effects of insulin-like growth factor I (IGF-I). To determine whether skeletal reloading after a period of unloading increases bone responsiveness to IGF-I, we examined bone structure...

Hormone replacement therapy (HRT) in postmenopausal women suppresses the increase in bone resorption expected as circulating levels of endogenous estrogen decline. We tested the hypothesis that bone lead content might remain elevated in women on HRT. Fifty six women who at recruitment were on average 35 years postmenopausal were placed on calcium supplementation. Six months later 33 of these wo...

This study redescribes an arthroscopic bridge technique for repair of avulsion of the posterior cruciate ligament. The procedure is performed step-to-step. In this technique we created two bone tunnels in the anterior aspect of the tibia and inferior medial of the tibia tuberosity and then create suture fixation of the fragment using the suture bridge. The arthroscopic bridge technique was used...

background: total knee arthroplasty is a complex procedure aiming to relieve pain and improve function. it is critical to select prosthesis that best cover the bone surfaces. ethnicity may affect fitness of the components mainly designed for caucasian populations. this study aimed to evaluate morphometric features of proximal tibia in iranian population.   methods : during 2013, 150 consecutive...

Osteoarthrosis (OA) is a multi-factorial disease characterized by the progressive loss of articular cartilage and the development subchondral sclerosis, intra-osseous cysts and osteophytes. In addition to changes in cartilage which occur in OA, it is suggested that early changes are seen in the adjoining subchondral and trabecular bone (1). In this work we develop, optimize and extend MR techni...

of about half an inch, and underneath, to nearly the same distance, the soft parts had receded from the tibia, leaving a outjutting right angle of denuded bone; still, although tho soft parts had thus receded, or probably sloughed, from its sharp edge, they had in no way deserted the tibia. Appearing to have considered that the flaps could not heal over a bony edge of such extreme sharpness, th...